Practice questions

Geography practice questions (Group 4)

Questions 11 to 14 of 20

By TNPSC Guide editorial team · Last updated: 27.10.2026

1. Question 11

   Consider the following statements on the forests of India and annual rainfall. 1. Tropical evergreen forests grow where the rain is over 200 cm and the humidity over 70 per cent. 2. Tropical deciduous forests are found where the rain is 100 to 200 cm. 3. Tropical dry forests are found where the rain is 50 to 100 cm. 4. Thorn forests are found only where the rain is under 25 cm. Which of these are correct?

   1. A. 1 and 2 only
   2. B. 1, 2 and 3 only
   3. C. 2, 3 and 4 only
   4. D. 1, 2, 3 and 4
   Answer and explanation

   Correct answer: B. 1, 2 and 3 only

   Evergreen forests need over 200 cm, deciduous 100-200 cm and dry forests 50-100 cm of rain; thorn forests are where the rain is under 50 cm, and 25 cm is the mark of the desert biome, so 4 is wrong.

   Source: சமூக அறிவியல், பத்தாம் வகுப்பு, தமிழ் வழி (Social Science, Standard X, Tamil medium; Samacheer Kalvi) (புவியியல் அலகு 2 இந்தியா – காலநிலை மற்றும் இயற்கைத் தாவரங்கள், pp. 157-158 (PDF pp. 163-164))

2. Question 12

   By what other name are tropical deciduous forests called?

   1. A. Monsoon forests
   2. B. Swamp forests
   3. C. Thorn forests
   4. D. Shola forests
   Answer and explanation

   Correct answer: A. Monsoon forests

   Tropical deciduous forests are also called monsoon forests; teak and sal are their most important trees.

   Source: சமூக அறிவியல், பத்தாம் வகுப்பு, தமிழ் வழி (Social Science, Standard X, Tamil medium; Samacheer Kalvi) (புவியியல் அலகு 2 இந்தியா – காலநிலை மற்றும் இயற்கைத் தாவரங்கள், p. 157 (PDF p. 163))

3. Question 13

   Match the following (project - river). (a) Tehri dam - 1. Narmada (b) Sardar Sarovar - 2. Damodar (c) Kosi project - 3. Bhagirathi (d) Damodar project - 4. Kosi

   1. A. (a) 3, (b) 1, (c) 4, (d) 2
   2. B. (a) 1, (b) 3, (c) 4, (d) 2
   3. C. (a) 3, (b) 1, (c) 2, (d) 4
   4. D. (a) 3, (b) 4, (c) 1, (d) 2
   Answer and explanation

   Correct answer: A. (a) 3, (b) 1, (c) 4, (d) 2

   The Tehri dam is on the Bhagirathi (Uttarakhand), Sardar Sarovar on the Narmada, the Kosi project on the Kosi (Bihar, Nepal) and the Damodar project on the Damodar.

   Source: சமூக அறிவியல், பத்தாம் வகுப்பு, தமிழ் வழி (Social Science, Standard X, Tamil medium; Samacheer Kalvi) (புவியியல் அலகு 3 இந்தியா – வேளாண்மை, p. 170 (PDF p. 176))

4. Question 14

   Where is 60 per cent of India's perennial canal irrigation?

   1. A. Peninsular India
   2. B. The Deccan plateau
   3. C. The great plains of North India
   4. D. The eastern coastal plain
   Answer and explanation

   Correct answer: C. The great plains of North India

   Canal irrigation is of two kinds, inundation and perennial; 60 per cent of perennial canal irrigation is in the great plains of North India.

   Source: சமூக அறிவியல், பத்தாம் வகுப்பு, தமிழ் வழி (Social Science, Standard X, Tamil medium; Samacheer Kalvi) (புவியியல் அலகு 3 இந்தியா – வேளாண்மை, p. 167 (PDF p. 173))